Form 9.B Project Summary



Proposal Number:


Project Title:

A Catalytically Stabilized Lean Direct

Injection Combustor for Advanced

Subsonic Technology Emissions


Technical Abstract (Limit 200 words)

A catalytic lean direct injection (LDI) design is a

practical approach for achieving NOx emissions

reduction for the Advanced Subsonic Technology

(AST) combustor. Our novel catalytic LDI design

integrates the underlying catalytic combustion

principles behind Precision Combustion's prior lean

premixed prevaporized(LPP)designs with effective

LDI principles applied to liquid fuels. This combines

the benefits of LDI, including avoiding preignition,

with the improved stability and ultra-low NOx

emissions of catalytically stabilized combustion.

Catalytic enhancement of flame stability offers

potential breakthroughs for NASA's advanced

subsonic program gas turbine engine through very

low pressure drop, high inlet duct velocity, high

turndown and stability, and low NOx at pressure.

Potential Commercial Applications (Limit 200 words)

High efficiency and low emissions are twin

objectives of future aerospace gas turbine engines.

This design approach contributes to these

objectives by enhancing stability, mixing, and

turndown of Lean Direct Injection Designs, offering

design flexibility to engine designers. This

combustor is being developed with a focus upon

ease of implementation into engine manufacturers

Advanced Subsonic Technology combustors

designs, and has the potential to create significant

value-added for the aircraft engine manufacturers.

Spinoff low NOx dual fuel stationary gas turbine

applications for this technology also show

significant promise.

Name and Address of Principal Investigator (Name,

Organization Name, Mail Address, City/State/Zip)

Gilbert Kraemer

Precision Combustion, Inc.

25 Science Park, MS 24

New Haven , CT 06511-1968

Name and Address of Offeror (Firm Name, Mail Address,


Paul Donahe

Precision Combustion, Inc

25 Science Park, MS 24

New Haven , CT 06511-1968